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PODS
2004
ACM
189views Database» more  PODS 2004»
14 years 5 months ago
The Lixto Data Extraction Project - Back and Forth between Theory and Practice
We present the Lixto project, which is both a research project in database theory and a commercial enterprise that develops Web data extraction (wrapping) and Web service definiti...
Georg Gottlob, Christoph Koch, Robert Baumgartner,...
ICDT
2001
ACM
110views Database» more  ICDT 2001»
13 years 9 months ago
On Answering Queries in the Presence of Limited Access Patterns
In information-integration systems, source relations often have limitations on access patterns to their data; i.e., when one must provide values for certain attributes of a relatio...
Chen Li, Edward Y. Chang
SIGMOD
1998
ACM
150views Database» more  SIGMOD 1998»
13 years 9 months ago
Extracting Schema from Semistructured Data
Semistructured data is characterized by the lack of any fixed and rigid schema, although typically the data hassomeimplicitstructure. While thelack offixedschemamakesextracting ...
Svetlozar Nestorov, Serge Abiteboul, Rajeev Motwan...
JSW
2006
82views more  JSW 2006»
13 years 5 months ago
Incremental Implementation of Syntax Driven Logics
Abstract-- This paper describes a technique combining higher order functions, algebraic datatypes, and monads to incrementally implement syntax driven logics. Extensions can be com...
Ignatius Sri Wishnu Brata Prasetya, A. Azurat, Tan...
ECCC
2006
145views more  ECCC 2006»
13 years 5 months ago
Constraint satisfaction: a personal perspective
Attempts at classifying computational problems as polynomial time solvable, NP-complete, or belonging to a higher level in the polynomial hierarchy, face the difficulty of undecid...
Tomás Feder